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Black-streaked scimitar babbler 
(Erythrogenys gravivox, Hoạ mi đất họng trắng)

The black-streaked scimitar babbler (Erythrogenys gravivox) is a species of bird in the family Timaliidae. 
The bird is found in China, Laos, Myanmar and Vietnam.

Erythrogenys
Erythro: eruthros meaning "red"
genys: Latin genus (“birth, origin, a race, sort, kind”) from the root gen- in Latin gignō (“to beget, produce”); also, Greek genuos meaning "cheek".
gravivox Latin gravis disagreeable; vox voice.

Erythrogenys is a genus of scimitar babblers, jungle birds with long downcurved bills.

1/ Rusty-cheeked scimitar babbler (Họa mi đất má trắng, Erythrogenys erythrogenys) 
2/ Large scimitar babbler (Họa mi đất mỏ dài, Erythrogenys hypoleucos)
3/ Black-streaked scimitar babbler (Erythrogenys gravivox, Hoạ mi đất họng trắng)

Erythrogenys
Erythro: eruthros meaning "red"
genys: Latin genus (“birth, origin, a race, sort, kind”) from the root gen- in Latin gignō (“to beget, produce”); also, Greek genuos meaning "cheek". 

Large Scimitar Babbler 
(Họa mi đất mỏ dài, Erythrogenys hypoleucos)

The large scimitar babbler (Erythrogenys hypoleucos) is a species of bird in the family Timaliidae.

Erythrogenys
Erythro: eruthros meaning "red"
genys: Latin genus (“birth, origin, a race, sort, kind”) from the root gen- in Latin gignō (“to beget, produce”). 
The Latinized Greek hypoleucos, with the correct “-os” ending as first published by Gould, means white below New Latin, from Ancient Greek ὑπόλευκος (hupóleukos, “whitish underneath”).
hypo: From Ancient Greek ὑπο- (hupo-), combining form of ὑπό (hupó, “under”).

Rusty-cheeked scimitar babbler 
(Họa mi đất má trắng, Erythrogenys erythrogenys) 

The rusty-cheeked scimitar babbler (Erythrogenys erythrogenys) is a passerine bird in the babbler family Timaliidae that is found in the Himalayas from northeast Pakistan to Bhutan.

Erythrogenys
Erythro: eruthros meaning "red"
genys: Latin genus (“birth, origin, a race, sort, kind”) from the root gen- in Latin gignō (“to beget, produce”). 
The specific epithet combines the Ancient Greek eruthros meaning "red" with genuos meaning "cheek".